Siemens LMV36.520A1 Basic Documentation page 139

Value Error
-1
Timeout of standardization (VSD ramp down
time too long)
-2
Storage of standardized speed not successful
-3 Line interruption
-4
Speed variation / VSD ramp up time too long /
speed below minimum limit for standardization
-5
Wrong direction of rotation
-6 Unplausible sensor signals
-7 Invalid standardized speed
-15 Speed deviation µC1 + µC2
-20 Wrong phase of phase manager
-21 Safety loop / burner flange open
Building Technologies Division
Infrastructure & Citiies Sector
6. Close the standardization
When standardization is successfully completed, reset parameter 641 to 0.
If standardization was not successful, parameter 641 assumes a negative value.
The value provides information on the cause of fault:
speed sensor
Basic documentation LMV36...
13 Fan control
Remedy
Timeout at the end of standardization during ramp down
of the VSD
 Ramp time settings of the VSD are not shorter than
those of the basic unit (parameter: 523)
Error during storage of the standardized speed
 lock the basic unit, then reset it and repeat the
standardization
Basic unit receives no pulses from the speed sensor.
1. Motor does not run.
2. Speed sensor is not connected.
3. Speed sensor is not actuated by the sensor disk
(check distance).
Motor has not reached a stable speed after ramp up.
1. Ramp time settings of the VSD are not shorter than
those of the basic unit (parameters 522, 523).
2. Characteristic of the VSD is not linear. Configuration
of the voltage input at the VSD must accord with that
of the basic unit (parameter 645).
3. VSD does not follow quickly enough the changes of
the basic unit. Check settings of the VSD
(input filter, slippage compensation, hiding different
speeds)
Speed of VSD lies below the minimum for
4.
standardization (650 rpm).
Motor's direction of rotation is wrong.
1. Motor turns indeed in the wrong direction
 change parameterization of the direction of rotation
or interchange 2 live conductors.
2. Sensor disk is fitted the wrong way
 turn the sensor disk.
The required pulse pattern (60°, 120°, 180°) has not
been correctly identified.
1. Speed sensor does not detect all tappets of the
sensor disk
 check distance
2. As the motor turns, other metal parts are detected
also, in addition to the tappets
 improve mounting.
3. Electromagnetic interference on the sensor lines
 check cable routing, improve EMC
The standardized speed measured does not lie in the
permissible range.
 Motor turns too slowly or too fast.
The speeds of microcomputer 1 and 2 deviated too
much. This can be caused by wrong standardized
speeds (e.g. after restoring a data set to a new unit)
→ repeat standardization and check the fuel-air ratio
Standardization was made in a wrong phase. Permitted
are only phases 12
 controller OFF, start standardization again
Safety loop or burner flange is open
 repeat standardization with safety loop closed
139/248
CC1P7544en
25.09.2013